The entire day was consumed by the examination and re-examination of LAPD criminalist Andrea Mazzola, with defense attorney Peter Neufeld systematically dismantling the prosecution's evidence handling and documentation. In a devastating moment, Mazzola admitted her August 23, 1994 sworn testimony—that she had personally initialed every coin envelope containing blood stains—was based on a mistaken 'assumption' and was wrong; the actual envelopes bear Dennis Fung's initials instead. The defense exposed multiple critical documentation failures: no photographs taken before booking, property report quantity boxes left blank, field notes lacking swatch counts, and coin envelopes uninitiated by the collecting criminalist.

• Mazzola impeached on claim she initiated all coin envelopes—actual envelopes bear Fung's initials, not hers
• Mazzola concedes her August 23, 1994 sworn testimony was based on 'assumption' and is incorrect
• Defense establishes documentation failures: no pre-booking photographs, blank quantity boxes, missing dates on blood vial notation
• Defense timeline challenges at Rockingham using KABC videotape and weight demonstrations
• Judge rejects water-filled tube demonstration to jurors due to insufficient foundation
• Defense enters tape-recorded November 22, 1994 statement of Mazzola with DA investigators alleging she distanced herself from OJ blood vial
• Sidebar disputes over discovery of tape transcript and scope of evidence handling testimony
• DNA testimony scheduled: Dr. Cotton (Cellmark), Gary Sims and Renee Montgomery (DOJ); Defense notices formal objection to DNA results without chain-of-custody foundation